// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_PUBLIC_BROWSER_JAVASCRIPT_DIALOG_MANAGER_H_
#define CONTENT_PUBLIC_BROWSER_JAVASCRIPT_DIALOG_MANAGER_H_

#include <string>

#include "base/callback.h"
#include "base/strings/string16.h"
#include "content/common/content_export.h"
#include "content/public/common/javascript_message_type.h"
#include "ui/gfx/native_widget_types.h"
#include "url/gurl.h"

namespace content {

class WebContents;

// An interface consisting of methods that can be called to produce and manage
// JavaScript dialogs.
class CONTENT_EXPORT JavaScriptDialogManager {
public:
    typedef base::Callback<void(bool /* success */,
        const base::string16& /* user_input */)>
        DialogClosedCallback;

    // Displays a JavaScript dialog. |did_suppress_message| will not be nil; if
    // |true| is returned in it, the caller will handle faking the reply.
    virtual void RunJavaScriptDialog(
        WebContents* web_contents,
        const GURL& origin_url,
        JavaScriptMessageType javascript_message_type,
        const base::string16& message_text,
        const base::string16& default_prompt_text,
        const DialogClosedCallback& callback,
        bool* did_suppress_message)
        = 0;

    // Displays a dialog asking the user if they want to leave a page.
    virtual void RunBeforeUnloadDialog(WebContents* web_contents,
        bool is_reload,
        const DialogClosedCallback& callback)
        = 0;

    // Accepts or dismisses the active JavaScript dialog, which must be owned
    // by the given |web_contents|. If |prompt_override| is not null, the prompt
    // text of the dialog should be set before accepting. Returns true if the
    // dialog was handled.
    virtual bool HandleJavaScriptDialog(WebContents* web_contents,
        bool accept,
        const base::string16* prompt_override);

    // Cancels all active and pending dialogs for the given WebContents. If
    // |suppress_callbacks| is true, suppresses the calls to callbacks while
    // canceling those dialogs. If |reset_state| is true, resets any saved state
    // tied to |web_contents|.
    virtual void CancelDialogs(WebContents* web_contents,
        bool suppress_callbacks,
        bool reset_state)
        = 0;

    virtual ~JavaScriptDialogManager() { }
};

} // namespace content

#endif // CONTENT_PUBLIC_BROWSER_JAVASCRIPT_DIALOG_MANAGER_H_
